Lawn-mower.



No. 690,269. Patented. Dec. 3|, [90L D. L. GRISWOLD.

LAWN MOWER.

Application filed Mar. 11, 1901.)

(No Model.)

544mm: wart/ nzaaZ 1: ndnms 9mm 00. mcrauma. wunmcmm n. c.

UNITED STATES PATENT OF ICE.

DEXTER L. GRISWOLD, OF IVALTON, NEW YORK, ASSIGNOR OF ONE-HALF TO JACOBE. KEMMERER, OF SCRANTON, PENNSYLVANIA.

LAWN-MOWER.

SPECIFICATION forming part of Letters Patent No. 690,269, dated December31, 1901. Application filed March 11, 1901. Serial No. 50,553. (Nomodel.)

To all whom it may concern.-

Be it known that I, DEXTER L. GRIswoLD, a citizen of the United States,residing at Walton, in the county of Delaware and State of New York,haveinvented certain new and useful Improvements in Lawn-Mowers; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

My invention relates to improvements in lawn-mowers.

It has for'its object to greatlypromote simplicity, expedite the cuttingor mowing action, lessen cost of manufacture, and otherwise add to itsutility, convenience, and facility of operation.

It consists of certain novel features of construction and of thecombination and arrangement of the parts, substantially as hereinaftermore fully disclosed, andspecifically pointed out by the claimconcluding the specification proper.

In the accompanying drawings, illustrating the preferred embodiment ofmy invention, Figure 1 is a plan view. Fig. 2 is a longitudinal section.Fig. 3 is a cross-section more fully disclosing the cutter or knife barreciprocating cam arrangement. Fig. 4 is a detached broken-away view ofthe axle and driving-wheel ratchet-and-pawl connection.

Latitude is allowed herein as to details, as they may be changed orvaried at will without departing from the spirit of my invention and thesame yet remain intact and be prot-ected.

In carrying out my invention I provide a suitable frame 1, preferably,as shown, with a handle in practice attached to its rear ele vated orupturned end and itself suitably supported or suspended from an axle 2,carried by driving or transporting wheels 3 3. Said frame carries at itsforward end a finger-bar 4 of the usual construction, and upon thisfinger-bar is borne the knife-bar 5, whose cutters or knives arereciprocated under over- To the cutter or knife bar 5 about centrallyare fixed the forward ends of the arms 6 of an elliptical ring-like cam6", arranged rearward of the knife-bar, and with this cam engages aneccentric or crank 7, carried by the forward end of a shaft 8 to impartthe requisite reciprocating action to said knifebar in effecting thecutting or mowing action.

The shaft 8, supportedin cross-pieces of the frame 1, is driven,preferably, by multiple gearing 9 9, carried by an axle 10 andintergeared gearing 11, 11 11 and 12, carried by the driving-wheel axle2 and axle 13, respectively, said axles 10 and 13 being also mounted insaid frame. The transmittal of motion from the drivingwheels to theiraxle, which in turn transmits motion to said gearing, is effected by apawl-and-ratchet arrangement 14; 15, as shown, when the mower is movedforward. When, however, the movement of the mower is reversed, theratchet and;paw1 will not be efiective, consequently providing forthrowing the cutter-bar out of action.

Having thus fully described my invention, What I claim, and desire tosecure by Letters Patent, is

In a lawn-mower, the combination with the cutter-bar, and a crank-shaft,of an elliptical ring-like cam having opposite arms extending forwardfrom one side thereof and secured at their forward' ends to saidcutter-bar, upon its upper surface, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

DEXTER L. GRISWOLD.

